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Loans and Allowance for Loan Losses - Loan Risk Rating (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | $ 1,867,747 | $ 1,777,239
Commercial Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 890,462 | 860,027
Consumer Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 405,531 | 407,254
Construction and Land Development [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 219,751 | 187,895
Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 341,207 | 308,254
Consumer and Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 10,796 | 13,809
Non PCI Loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 1,837,276 | 1,743,081
Non PCI Loans [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 1,802,230 | 1,728,896
Non PCI Loans [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 30,630 | 10,758
Non PCI Loans [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 1,266 | 309
Non PCI Loans [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 2,953 | 2,915
Non PCI Loans [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 197 | 203
Non PCI Loans [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 872,582 | 842,345
Non PCI Loans [Member] | Commercial Real Estate [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 856,238 | 834,912
Non PCI Loans [Member] | Commercial Real Estate [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 15,488 | 6,791
Non PCI Loans [Member] | Commercial Real Estate [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 489 | 0
Non PCI Loans [Member] | Commercial Real Estate [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 367 | 642
Non PCI Loans [Member] | Commercial Real Estate [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Non PCI Loans [Member] | Consumer Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 398,362 | 398,542
Non PCI Loans [Member] | Consumer Real Estate [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 394,525 | 394,728
Non PCI Loans [Member] | Consumer Real Estate [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 2,503 | 2,678
Non PCI Loans [Member] | Consumer Real Estate [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 9 | 14
Non PCI Loans [Member] | Consumer Real Estate [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 1,159 | 1,122
Non PCI Loans [Member] | Consumer Real Estate [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 166 | 0
Non PCI Loans [Member] | Construction and Land Development [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 215,122 | 183,293
Non PCI Loans [Member] | Construction and Land Development [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 209,029 | 182,524
Non PCI Loans [Member] | Construction and Land Development [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 5,164 | 64
Non PCI Loans [Member] | Construction and Land Development [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 155 | 158
Non PCI Loans [Member] | Construction and Land Development [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 774 | 547
Non PCI Loans [Member] | Construction and Land Development [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Non PCI Loans [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 340,773 | 305,697
Non PCI Loans [Member] | Commercial and Industrial [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 332,165 | 303,805
Non PCI Loans [Member] | Commercial and Industrial [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 7,433 | 1,090
Non PCI Loans [Member] | Commercial and Industrial [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 612 | 137
Non PCI Loans [Member] | Commercial and Industrial [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 556 | 462
Non PCI Loans [Member] | Commercial and Industrial [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 7 | 203
Non PCI Loans [Member] | Consumer and Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 10,437 | 13,204
Non PCI Loans [Member] | Consumer and Other [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 10,273 | 12,927
Non PCI Loans [Member] | Consumer and Other [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 42 | 135
Non PCI Loans [Member] | Consumer and Other [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 1 | 0
Non PCI Loans [Member] | Consumer and Other [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 97 | 142
Non PCI Loans [Member] | Consumer and Other [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 24 | 0
Purchased Credit Impaired Loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 30,471 | 34,158
Purchased Credit Impaired Loans [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 19,623 | 26,623
Purchased Credit Impaired Loans [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 7,009 | 3,147
Purchased Credit Impaired Loans [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 1,326 | 1,536
Purchased Credit Impaired Loans [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 2,513 | 2,852
Purchased Credit Impaired Loans [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 17,880 | 17,682
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 13,760 | 14,050
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 2,497 | 1,805
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 886 | 1,030
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 737 | 797
Purchased Credit Impaired Loans [Member] | Commercial Real Estate [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 7,169 | 8,712
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 4,969 | 5,617
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 383 | 756
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 435 | 446
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 1,382 | 1,893
Purchased Credit Impaired Loans [Member] | Consumer Real Estate [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 4,629 | 4,602
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 516 | 4,033
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 4,113 | 569
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Purchased Credit Impaired Loans [Member] | Construction and Land Development [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 434 | 2,557
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 53 | 2,382
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 1 | 0
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 50
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 380 | 125
Purchased Credit Impaired Loans [Member] | Commercial and Industrial [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 0 | 0
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 359 | 605
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 325 | 541
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] | Watch [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 15 | 17
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 5 | 10
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | 14 | 37
Purchased Credit Impaired Loans [Member] | Consumer and Other [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total loans | $ 0 | $ 0

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